Inadequate air connectivity to metro cities is considered a major obstacle for the local economic development of remote cities. It is shown that poor air connectivity services inhibit local employment growth by limiting the city's attractiveness for new businesses and reducing the viability of existing businesses [1]}. In the existing literature, empirical studies from European Union, United States, and China have established a positive impact of metro airport connectivity on remote cities' regional growth [2]}, [3]}. A study based on airports in Canada shows an increase of 1126 additional air-travel passengers can create one person-year of employment [4]}. [3]} showed that a \(10\%\)  increase in population density could lead to a \(1.7\%\)  increase in air passenger volume in China. Therefore, the remote cities' adequate population is also an important criterion to make air connectivity from remote cities economically viable. By considering the above two factors (economic progress and population), we propose the following remote city opportunity factor (RCOF):
\(\rho _i=\alpha _{i}\frac{\gamma _{\max } - \gamma _{i} +\delta }{\sum _{i \in M} \lbrace \gamma _{\max } -\gamma _{i}\rbrace  +\delta } + (1-\alpha _{i}) \frac{\omega _i - \omega _{\min } +\delta }{\sum _{i \in M}\lbrace  \omega _{i} - \omega _{\min }\rbrace  +\delta }\) 
